- Advanced Arenas, Inc
 - Bensenville - Specialises in ice arena management and development. - Carter Group, The
- Chicago - Specialising in corporate move management, hospital transition planning, and asset management services since 1989.
- Event Engineering, Inc.
- Des Plaines - Provides production management services for sales, marketing, and entertainment events for corporations, meeting producers, and agencies. Headquartered in Chicago.
- Gladson & Associates, Inc.
- Lisle - Category management, marketing support and store design.
- J & S Resources
- Willowbrook - Corporate and paralegal services.
- J&T Management, Inc.
- Crete - Offers facilities management including landscaping, car park maintenance, power washing, and more.
- KD Mailing & Fulfillment
- Lincolnwood - Provides information, pricing, and postage estimates for direct mail, literature and product fulfillment, mailing lists, and print-on-demand services.
- LAI Maintenance Systems, Inc.
- Antioch - Provides technologies, workshops, and consulting to aid plant maintenance and engineering.
- McFarlane Douglass
- Chicago - Provider of interior and exterior corporate landscaping, office plant and flower maintenance services, and commercial holiday decorations in Chicago, IL.
- MG Rush Systems, Inc.
- Barrington - Provides training to facilitators for business, technical, governmental, and community environments.
- ReSourcing Services Company, LLC
- Chicago - Reinvents and runs corporate facilities organisations.
- ROOM500
- Highland Park - Offering personal and business concierge, administrative support, and secretarial services, travel planning, and more.
- THG Worldwide
- Chicago - Corporate hospitality specialists.
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